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Based on patch submitted by Mike Edwards <pf-debian-bugs@mirkwood.net>
to Debian Bug #861993 (https://bugs.debian.org/861993). See excerpt from bug
report below.
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Dear Maintainer,
Using driver 'picoLCDGraphic' in lcd4linux.conf, backlight can only be set to 0 or 1 (off/on).
While the backlight of the picolcd is on at boot, the moment lcd4linux starts, the backlight turns
off with either setting.
Looking at the source for the driver, I found that somewhere along the line, the function to
set the backlight had been changed to use an 8 bit value from 0 - 255, effectively making this
a brightness setting:
static int drv_pLG_backlight(int backlight)
{
unsigned char cmd[2] = { 0x91 }; /* set backlight */
if (backlight < 0)
backlight = 0;
if (backlight > 255)
backlight = 255;
cmd[1] = backlight;
drv_pLG_send(cmd, 2);
return backlight;
}
... but the config option for backlight was still limited to only accepting a 0 or 1:
if (cfg_number(section, "Backlight", 0, 0, 1, &value) > 0) {
info("Setting backlight to %d", value);
drv_pLG_backlight(value);
}
I've patched that if statement above to accept values between 0 and 255. Now, setting the config
option for backlight to 255 in lcd4linux.conf does result in the backlight being turned on at
full brightness.
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Signed-off-by: Jonathan McCrohan <jmccrohan@gmail.com>
git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@1204 3ae390bd-cb1e-0410-b409-cd5a39f66f1f
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git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@1181 3ae390bd-cb1e-0410-b409-cd5a39f66f1f
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git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@1153 3ae390bd-cb1e-0410-b409-cd5a39f66f1f
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git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@1143 3ae390bd-cb1e-0410-b409-cd5a39f66f1f
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git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@1120 3ae390bd-cb1e-0410-b409-cd5a39f66f1f
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git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@1119 3ae390bd-cb1e-0410-b409-cd5a39f66f1f
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git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@1118 3ae390bd-cb1e-0410-b409-cd5a39f66f1f
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git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@1114 3ae390bd-cb1e-0410-b409-cd5a39f66f1f
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git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@1113 3ae390bd-cb1e-0410-b409-cd5a39f66f1f
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redrawing the whole display after each changed widget; you may get the old behaviour by setting "Update 0")
git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@1094 3ae390bd-cb1e-0410-b409-cd5a39f66f1f
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* Prevent dbus from exiting the program when compiled with -DDEBUG
git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@1068 3ae390bd-cb1e-0410-b409-cd5a39f66f1f
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git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@985 3ae390bd-cb1e-0410-b409-cd5a39f66f1f
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This fixes build on openSUSE Factory.
git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@899 3ae390bd-cb1e-0410-b409-cd5a39f66f1f
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git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@897 3ae390bd-cb1e-0410-b409-cd5a39f66f1f
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git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@882 3ae390bd-cb1e-0410-b409-cd5a39f66f1f
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